src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 Hiroyuki Yamamoto and the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <glib/gi18n.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <dirent.h>
  32 #include <unistd.h>
  33 #include <time.h>
  34
  35 #include "news.h"
  36 #include "news_gtk.h"
  37 #include "nntp.h"
  38 #include "socket.h"
  39 #include "recv.h"
  40 #include "procmsg.h"
  41 #include "procheader.h"
  42 #include "folder.h"
  43 #include "session.h"
  44 #include "statusbar.h"
  45 #include "codeconv.h"
  46 #include "utils.h"
  47 #include "prefs_common.h"
  48 #include "prefs_account.h"
  49 #include "inputdialog.h"
  50 #include "log.h"
  51 #include "progressindicator.h"
  52 #include "remotefolder.h"
  53 #include "alertpanel.h"
  54 #include "inc.h"
  55
  56 #if USE_OPENSSL
  57 #  include "ssl.h"
  58 #endif
  59
  60 #define NNTP_PORT       119
  61 #if USE_OPENSSL
  62 #define NNTPS_PORT      563
  63 #endif
  64
  65 typedef struct _NewsFolder      NewsFolder;
  66
  67 #define NEWS_FOLDER(obj)        ((NewsFolder *)obj)
  68
  69 struct _NewsFolder
  70 {
  71         RemoteFolder rfolder;
  72
  73         gboolean use_auth;
  74         gboolean lock_count;
  75 };
  76
  77 static void news_folder_init             (Folder        *folder,
  78                                           const gchar   *name,
  79                                           const gchar   *path);
  80
  81 static Folder   *news_folder_new        (const gchar    *name,
  82                                          const gchar    *folder);
  83 static void      news_folder_destroy    (Folder         *folder);
  84
  85 static gchar *news_fetch_msg            (Folder         *folder,
  86                                          FolderItem     *item,
  87                                          gint            num);
  88 static void news_remove_cached_msg      (Folder         *folder,
  89                                          FolderItem     *item,
  90                                          MsgInfo        *msginfo);
  91 #if USE_OPENSSL
  92 static Session *news_session_new         (const gchar   *server,
  93                                           gushort        port,
  94                                           const gchar   *userid,
  95                                           const gchar   *passwd,
  96                                           SSLType        ssl_type);
  97 #else
  98 static Session *news_session_new         (const gchar   *server,
  99                                           gushort        port,
 100                                           const gchar   *userid,
 101                                           const gchar   *passwd);
 102 #endif
 103
 104 static gint news_get_article_cmd         (NNTPSession   *session,
 105                                           const gchar   *cmd,
 106                                           gint           num,
 107                                           gchar         *filename);
 108 static gint news_get_article             (NNTPSession   *session,
 109                                           gint           num,
 110                                           gchar         *filename);
 111
 112 static gint news_select_group            (NNTPSession   *session,
 113                                           const gchar   *group,
 114                                           gint          *num,
 115                                           gint          *first,
 116                                           gint          *last);
 117 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
 118 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
 119                                           MsgInfo       *msginfo);
 120 static gint news_get_num_list                    (Folder        *folder,
 121                                           FolderItem    *item,
 122                                           GSList       **list,
 123                                           gboolean      *old_uids_valid);
 124 static MsgInfo *news_get_msginfo                 (Folder        *folder,
 125                                           FolderItem    *item,
 126                                           gint           num);
 127 static GSList *news_get_msginfos                 (Folder        *folder,
 128                                           FolderItem    *item,
 129                                           GSList        *msgnum_list);
 130 static gboolean news_scan_required               (Folder        *folder,
 131                                           FolderItem    *item);
 132
 133 static gint news_post_stream                     (Folder        *folder,
 134                                           FILE          *fp);
 135 static gchar *news_folder_get_path       (Folder        *folder);
 136 static gchar *news_item_get_path                 (Folder        *folder,
 137                                           FolderItem    *item);
 138 static void news_synchronise             (FolderItem    *item, gint days);
 139 static int news_remove_msg               (Folder        *folder,
 140                                           FolderItem    *item,
 141                                           gint           msgnum);
 142 static gint news_remove_folder           (Folder        *folder,
 143                                           FolderItem    *item);
 144 static FolderClass news_class;
 145
 146 FolderClass *news_get_class(void)
 147 {
 148         if (news_class.idstr == NULL) {
 149                 news_class.type = F_NEWS;
 150                 news_class.idstr = "news";
 151                 news_class.uistr = "News";
 152
 153                 /* Folder functions */
 154                 news_class.new_folder = news_folder_new;
 155                 news_class.destroy_folder = news_folder_destroy;
 156
 157                 /* FolderItem functions */
 158                 news_class.item_get_path = news_item_get_path;
 159                 news_class.get_num_list = news_get_num_list;
 160                 news_class.scan_required = news_scan_required;
 161                 news_class.remove_folder = news_remove_folder;
 162
 163                 /* Message functions */
 164                 news_class.get_msginfo = news_get_msginfo;
 165                 news_class.get_msginfos = news_get_msginfos;
 166                 news_class.fetch_msg = news_fetch_msg;
 167                 news_class.synchronise = news_synchronise;
 168                 news_class.remove_msg = news_remove_msg;
 169                 news_class.remove_cached_msg = news_remove_cached_msg;
 170         };
 171
 172         return &news_class;
 173 }
 174
 175 static int news_remove_msg               (Folder        *folder,
 176                                           FolderItem    *item,
 177                                           gint           msgnum)
 178 {
 179         gchar *path, *filename;
 180
 181         g_return_val_if_fail(folder != NULL, -1);
 182         g_return_val_if_fail(item != NULL, -1);
 183
 184         path = folder_item_get_path(item);
 185         if (!is_dir_exist(path))
 186                 make_dir_hier(path);
 187
 188         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msgnum), NULL);
 189         g_free(path);
 190         g_unlink(filename);
 191         g_free(filename);
 192         return 0;
 193 }
 194
 195 static void news_folder_lock(NewsFolder *folder)
 196 {
 197         folder->lock_count++;
 198 }
 199
 200 static void news_folder_unlock(NewsFolder *folder)
 201 {
 202         if (folder->lock_count > 0)
 203                 folder->lock_count--;
 204 }
 205
 206 int news_folder_locked(Folder *folder)
 207 {
 208         if (folder == NULL)
 209                 return 0;
 210
 211         return NEWS_FOLDER(folder)->lock_count;
 212 }
 213
 214 static Folder *news_folder_new(const gchar *name, const gchar *path)
 215 {
 216         Folder *folder;
 217
 218         folder = (Folder *)g_new0(NewsFolder, 1);
 219         folder->klass = &news_class;
 220         news_folder_init(folder, name, path);
 221
 222         return folder;
 223 }
 224
 225 static void news_folder_destroy(Folder *folder)
 226 {
 227         gchar *dir;
 228
 229         dir = news_folder_get_path(folder);
 230         if (is_dir_exist(dir))
 231                 remove_dir_recursive(dir);
 232         g_free(dir);
 233
 234         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 235 }
 236
 237 static void news_folder_init(Folder *folder, const gchar *name,
 238                              const gchar *path)
 239 {
 240         folder_remote_folder_init(folder, name, path);
 241 }
 242
 243 #if USE_OPENSSL
 244 static Session *news_session_new(const gchar *server, gushort port,
 245                                  const gchar *userid, const gchar *passwd,
 246                                  SSLType ssl_type)
 247 #else
 248 static Session *news_session_new(const gchar *server, gushort port,
 249                                  const gchar *userid, const gchar *passwd)
 250 #endif
 251 {
 252         gchar buf[NNTPBUFSIZE];
 253         Session *session;
 254
 255         g_return_val_if_fail(server != NULL, NULL);
 256
 257         log_message(LOG_PROTOCOL, _("creating NNTP connection to %s:%d ...\n"), server, port);
 258
 259 #if USE_OPENSSL
 260         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 261 #else
 262         session = nntp_session_new(server, port, buf, userid, passwd);
 263 #endif
 264
 265         return session;
 266 }
 267
 268 static Session *news_session_new_for_folder(Folder *folder)
 269 {
 270         Session *session;
 271         PrefsAccount *ac;
 272         const gchar *userid = NULL;
 273         gchar *passwd = NULL;
 274         gushort port;
 275         gchar buf[NNTPBUFSIZE];
 276
 277         g_return_val_if_fail(folder != NULL, NULL);
 278         g_return_val_if_fail(folder->account != NULL, NULL);
 279
 280         ac = folder->account;
 281         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 282                 userid = ac->userid;
 283                 if (ac->passwd && ac->passwd[0])
 284                         passwd = g_strdup(ac->passwd);
 285                 else
 286                         passwd = input_dialog_query_password(ac->nntp_server,
 287                                                              userid);
 288         }
 289
 290 #if USE_OPENSSL
 291         port = ac->set_nntpport ? ac->nntpport
 292                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 293         session = news_session_new(ac->nntp_server, port, userid, passwd,
 294                                    ac->ssl_nntp);
 295 #else
 296         if (ac->ssl_nntp != SSL_NONE) {
 297                 if (alertpanel_full(_("Insecure connection"),
 298                         _("This connection is configured to be secured "
 299                           "using SSL, but SSL is not available in this "
 300                           "build of Claws Mail. \n\n"
 301                           "Do you want to continue connecting to this "
 302                           "server? The communication would not be "
 303                           "secure."),
 304                           GTK_STOCK_CANCEL, _("Con_tinue connecting"),
 305                           NULL, FALSE, NULL, ALERT_WARNING,
 306                           G_ALERTDEFAULT) != G_ALERTALTERNATE)
 307                         return NULL;
 308         }
 309         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 310         session = news_session_new(ac->nntp_server, port, userid, passwd);
 311 #endif
 312         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 313                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 314
 315         g_free(passwd);
 316
 317         return session;
 318 }
 319
 320 static NNTPSession *news_session_get(Folder *folder)
 321 {
 322         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 323
 324         g_return_val_if_fail(folder != NULL, NULL);
 325         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 326         g_return_val_if_fail(folder->account != NULL, NULL);
 327
 328         if (prefs_common.work_offline &&
 329             !inc_offline_should_override(FALSE,
 330                 _("Claws Mail needs network access in order "
 331                   "to access the News server."))) {
 332                 return NULL;
 333         }
 334
 335         if (!rfolder->session) {
 336                 rfolder->session = news_session_new_for_folder(folder);
 337                 return NNTP_SESSION(rfolder->session);
 338         }
 339
 340         if (time(NULL) - rfolder->session->last_access_time <
 341                 SESSION_TIMEOUT_INTERVAL) {
 342                 return NNTP_SESSION(rfolder->session);
 343         }
 344
 345         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 346             != NN_SUCCESS) {
 347                 log_warning(LOG_PROTOCOL, _("NNTP connection to %s:%d has been"
 348                               " disconnected. Reconnecting...\n"),
 349                             folder->account->nntp_server,
 350                             folder->account->set_nntpport ?
 351                             folder->account->nntpport : NNTP_PORT);
 352                 session_destroy(rfolder->session);
 353                 rfolder->session = news_session_new_for_folder(folder);
 354         }
 355
 356         if (rfolder->session)
 357                 session_set_access_time(rfolder->session);
 358
 359         return NNTP_SESSION(rfolder->session);
 360 }
 361
 362 static void news_remove_cached_msg(Folder *folder, FolderItem *item, MsgInfo *msginfo)
 363 {
 364         gchar *path, *filename;
 365
 366         path = folder_item_get_path(item);
 367
 368         if (!is_dir_exist(path)) {
 369                 g_free(path);
 370                 return;
 371         }
 372
 373         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 374         g_free(path);
 375
 376         if (is_file_exist(filename)) {
 377                 g_unlink(filename);
 378         }
 379         g_free(filename);
 380 }
 381
 382 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 383 {
 384         gchar *path, *filename;
 385         NNTPSession *session;
 386         gint ok;
 387
 388         g_return_val_if_fail(folder != NULL, NULL);
 389         g_return_val_if_fail(item != NULL, NULL);
 390
 391         path = folder_item_get_path(item);
 392         if (!is_dir_exist(path))
 393                 make_dir_hier(path);
 394         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 395         g_free(path);
 396
 397         if (is_file_exist(filename)) {
 398                 debug_print("article %d has been already cached.\n", num);
 399                 return filename;
 400         }
 401
 402         session = news_session_get(folder);
 403         if (!session) {
 404                 g_free(filename);
 405                 return NULL;
 406         }
 407
 408         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 409         if (ok != NN_SUCCESS) {
 410                 if (ok == NN_SOCKET) {
 411                         session_destroy(SESSION(session));
 412                         REMOTE_FOLDER(folder)->session = NULL;
 413                 }
 414                 g_free(filename);
 415                 return NULL;
 416         }
 417
 418         debug_print("getting article %d...\n", num);
 419         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 420                               num, filename);
 421         if (ok != NN_SUCCESS) {
 422                 g_warning("can't read article %d\n", num);
 423                 if (ok == NN_SOCKET) {
 424                         session_destroy(SESSION(session));
 425                         REMOTE_FOLDER(folder)->session = NULL;
 426                 }
 427                 g_free(filename);
 428                 return NULL;
 429         }
 430         GTK_EVENTS_FLUSH();
 431         return filename;
 432 }
 433
 434 static NewsGroupInfo *news_group_info_new(const gchar *name,
 435                                           gint first, gint last, gchar type)
 436 {
 437         NewsGroupInfo *ginfo;
 438
 439         ginfo = g_new(NewsGroupInfo, 1);
 440         ginfo->name = g_strdup(name);
 441         ginfo->first = first;
 442         ginfo->last = last;
 443         ginfo->type = type;
 444
 445         return ginfo;
 446 }
 447
 448 static void news_group_info_free(NewsGroupInfo *ginfo)
 449 {
 450         g_free(ginfo->name);
 451         g_free(ginfo);
 452 }
 453
 454 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 455                                     NewsGroupInfo *ginfo2)
 456 {
 457         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 458 }
 459
 460 GSList *news_get_group_list(Folder *folder)
 461 {
 462         gchar *path, *filename;
 463         FILE *fp;
 464         GSList *list = NULL;
 465         GSList *last = NULL;
 466         gchar buf[NNTPBUFSIZE];
 467
 468         g_return_val_if_fail(folder != NULL, NULL);
 469         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 470
 471         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 472         if (!is_dir_exist(path))
 473                 make_dir_hier(path);
 474         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 475         g_free(path);
 476
 477         if ((fp = g_fopen(filename, "rb")) == NULL) {
 478                 NNTPSession *session;
 479                 gint ok;
 480
 481                 session = news_session_get(folder);
 482                 if (!session) {
 483                         g_free(filename);
 484                         return NULL;
 485                 }
 486
 487                 ok = nntp_list(session);
 488                 if (ok != NN_SUCCESS) {
 489                         if (ok == NN_SOCKET) {
 490                                 session_destroy(SESSION(session));
 491                                 REMOTE_FOLDER(folder)->session = NULL;
 492                         }
 493                         g_free(filename);
 494                         return NULL;
 495                 }
 496                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 497                         log_warning(LOG_PROTOCOL, _("can't retrieve newsgroup list\n"));
 498                         session_destroy(SESSION(session));
 499                         REMOTE_FOLDER(folder)->session = NULL;
 500                         g_free(filename);
 501                         return NULL;
 502                 }
 503
 504                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 505                         FILE_OP_ERROR(filename, "fopen");
 506                         g_free(filename);
 507                         return NULL;
 508                 }
 509         }
 510
 511         while (fgets(buf, sizeof(buf), fp) != NULL) {
 512                 gchar *p = buf;
 513                 gchar *name;
 514                 gint last_num;
 515                 gint first_num;
 516                 gchar type;
 517                 NewsGroupInfo *ginfo;
 518
 519                 p = strchr(p, ' ');
 520                 if (!p) continue;
 521                 *p = '\0';
 522                 p++;
 523                 name = buf;
 524
 525                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 526                         continue;
 527
 528                 ginfo = news_group_info_new(name, first_num, last_num, type);
 529
 530                 if (!last)
 531                         last = list = g_slist_append(NULL, ginfo);
 532                 else {
 533                         last = g_slist_append(last, ginfo);
 534                         last = last->next;
 535                 }
 536         }
 537
 538         fclose(fp);
 539         g_free(filename);
 540
 541         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 542
 543         return list;
 544 }
 545
 546 void news_group_list_free(GSList *group_list)
 547 {
 548         GSList *cur;
 549
 550         if (!group_list) return;
 551
 552         for (cur = group_list; cur != NULL; cur = cur->next)
 553                 news_group_info_free((NewsGroupInfo *)cur->data);
 554         g_slist_free(group_list);
 555 }
 556
 557 void news_remove_group_list_cache(Folder *folder)
 558 {
 559         gchar *path, *filename;
 560
 561         g_return_if_fail(folder != NULL);
 562         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 563
 564         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 565         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 566         g_free(path);
 567
 568         if (is_file_exist(filename)) {
 569                 if (remove(filename) < 0)
 570                         FILE_OP_ERROR(filename, "remove");
 571         }
 572         g_free(filename);
 573 }
 574
 575 gint news_post(Folder *folder, const gchar *file)
 576 {
 577         FILE *fp;
 578         gint ok;
 579
 580         g_return_val_if_fail(folder != NULL, -1);
 581         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 582         g_return_val_if_fail(file != NULL, -1);
 583
 584         if ((fp = g_fopen(file, "rb")) == NULL) {
 585                 FILE_OP_ERROR(file, "fopen");
 586                 return -1;
 587         }
 588
 589         ok = news_post_stream(folder, fp);
 590
 591         fclose(fp);
 592
 593         return ok;
 594 }
 595
 596 static gint news_post_stream(Folder *folder, FILE *fp)
 597 {
 598         NNTPSession *session;
 599         gint ok;
 600
 601         g_return_val_if_fail(folder != NULL, -1);
 602         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 603         g_return_val_if_fail(fp != NULL, -1);
 604
 605         session = news_session_get(folder);
 606         if (!session) return -1;
 607
 608         ok = nntp_post(session, fp);
 609         if (ok != NN_SUCCESS) {
 610                 log_warning(LOG_PROTOCOL, _("couldn't post article.\n"));
 611                 if (ok == NN_SOCKET) {
 612                         session_destroy(SESSION(session));
 613                         REMOTE_FOLDER(folder)->session = NULL;
 614                 }
 615                 return -1;
 616         }
 617
 618         return 0;
 619 }
 620
 621 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 622                                  gint num, gchar *filename)
 623 {
 624         gchar *msgid;
 625         gint ok;
 626
 627         ok = nntp_get_article(session, cmd, num, &msgid);
 628         if (ok != NN_SUCCESS)
 629                 return ok;
 630
 631         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 632         g_free(msgid);
 633
 634         ok = recv_write_to_file(SESSION(session)->sock, filename);
 635         if (ok < 0) {
 636                 log_warning(LOG_PROTOCOL, _("couldn't retrieve article %d\n"), num);
 637                 if (ok == -2)
 638                         return NN_SOCKET;
 639                 else
 640                         return NN_IOERR;
 641         }
 642
 643         return NN_SUCCESS;
 644 }
 645
 646 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 647 {
 648         return news_get_article_cmd(session, "ARTICLE", num, filename);
 649 }
 650
 651 /**
 652  * news_select_group:
 653  * @session: Active NNTP session.
 654  * @group: Newsgroup name.
 655  * @num: Estimated number of articles.
 656  * @first: First article number.
 657  * @last: Last article number.
 658  *
 659  * Select newsgroup @group with the GROUP command if it is not already
 660  * selected in @session, or article numbers need to be returned.
 661  *
 662  * Return value: NNTP result code.
 663  **/
 664 static gint news_select_group(NNTPSession *session, const gchar *group,
 665                               gint *num, gint *first, gint *last)
 666 {
 667         gint ok;
 668         gint num_, first_, last_;
 669
 670         if (!num || !first || !last) {
 671                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 672                         return NN_SUCCESS;
 673                 num = &num_;
 674                 first = &first_;
 675                 last = &last_;
 676         }
 677
 678         g_free(session->group);
 679         session->group = NULL;
 680
 681         ok = nntp_group(session, group, num, first, last);
 682         if (ok == NN_SUCCESS)
 683                 session->group = g_strdup(group);
 684         else
 685                 log_warning(LOG_PROTOCOL, _("couldn't select group: %s\n"), group);
 686
 687         return ok;
 688 }
 689
 690 #define PARSE_ONE_PARAM(p, srcp) \
 691 { \
 692         p = strchr(srcp, '\t'); \
 693         if (!p) return NULL; \
 694         else \
 695                 *p++ = '\0'; \
 696 }
 697
 698 static MsgInfo *news_parse_xover(const gchar *xover_str)
 699 {
 700         MsgInfo *msginfo;
 701         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 702         gchar *p;
 703         gint num, size_int, line_int;
 704         gchar *xover_buf;
 705
 706         Xstrdup_a(xover_buf, xover_str, return NULL);
 707
 708         PARSE_ONE_PARAM(subject, xover_buf);
 709         PARSE_ONE_PARAM(sender, subject);
 710         PARSE_ONE_PARAM(date, sender);
 711         PARSE_ONE_PARAM(msgid, date);
 712         PARSE_ONE_PARAM(ref, msgid);
 713         PARSE_ONE_PARAM(size, ref);
 714         PARSE_ONE_PARAM(line, size);
 715         /*
 716          * PARSE_ONE_PARAM(xref, line);
 717          *
 718          * if we parse extra headers we should first examine the
 719          * LIST OVERVIEW.FMT response from the server. See
 720          * RFC2980 for details
 721          */
 722
 723         tmp = strchr(line, '\t');
 724         if (!tmp) tmp = strchr(line, '\r');
 725         if (!tmp) tmp = strchr(line, '\n');
 726         if (tmp) *tmp = '\0';
 727
 728         num = atoi(xover_str);
 729         size_int = atoi(size);
 730         line_int = atoi(line);
 731
 732         /* set MsgInfo */
 733         msginfo = procmsg_msginfo_new();
 734         msginfo->msgnum = num;
 735         msginfo->size = size_int;
 736
 737         msginfo->date = g_strdup(date);
 738         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 739
 740         msginfo->from = conv_unmime_header(sender, NULL);
 741         msginfo->fromname = procheader_get_fromname(msginfo->from);
 742
 743         msginfo->subject = conv_unmime_header(subject, NULL);
 744
 745         remove_return(msginfo->from);
 746         remove_return(msginfo->fromname);
 747         remove_return(msginfo->subject);
 748
 749         if (msgid) {
 750                 extract_parenthesis(msgid, '<', '>');
 751                 remove_space(msgid);
 752                 if (*msgid != '\0')
 753                         msginfo->msgid = g_strdup(msgid);
 754         }
 755
 756         /* FIXME: this is a quick fix; references' meaning was changed
 757          * into having the actual list of references in the References: header.
 758          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 759          * their things properly. */
 760         if (ref && strlen(ref)) {
 761                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 762                 guint i = 0;
 763
 764                 while (ref_tokens[i]) {
 765                         gchar *cur_ref = ref_tokens[i];
 766                         msginfo->references = references_list_append(msginfo->references,
 767                                         cur_ref);
 768                         i++;
 769                 }
 770                 g_strfreev(ref_tokens);
 771
 772                 eliminate_parenthesis(ref, '(', ')');
 773                 if ((p = strrchr(ref, '<')) != NULL) {
 774                         extract_parenthesis(p, '<', '>');
 775                         remove_space(p);
 776                         if (*p != '\0')
 777                                 msginfo->inreplyto = g_strdup(p);
 778                 }
 779         }
 780
 781         return msginfo;
 782 }
 783
 784 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 785 {
 786         gchar *p;
 787         gchar *tmp;
 788         gint num;
 789
 790         p = strchr(xhdr_str, ' ');
 791         if (!p)
 792                 return NULL;
 793         else
 794                 p++;
 795
 796         num = atoi(xhdr_str);
 797         if (msginfo->msgnum != num) return NULL;
 798
 799         tmp = strchr(p, '\r');
 800         if (!tmp) tmp = strchr(p, '\n');
 801
 802         if (tmp)
 803                 return g_strndup(p, tmp - p);
 804         else
 805                 return g_strdup(p);
 806 }
 807
 808 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 809 {
 810         gchar * tmp;
 811         FILE * tmpfp;
 812         gchar buf[BUFFSIZE];
 813
 814         tmp = g_strdup_printf("%s%ctmp%p", g_get_tmp_dir(),
 815                               G_DIR_SEPARATOR, msginfo);
 816         if (tmp == NULL)
 817                 return -1;
 818
 819         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 820                 FILE_OP_ERROR(tmp, "fopen");
 821                 return -1;
 822         }
 823         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 824                 FILE_OP_ERROR(tmp, "chmod");
 825                 g_warning("can't change file mode\n");
 826         }
 827
 828         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 829         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 830         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 831         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 832         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 833         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 834         get_rfc822_date(buf, sizeof(buf));
 835         fprintf(tmpfp, "Date: %s\r\n", buf);
 836         fprintf(tmpfp, "\r\n");
 837         fprintf(tmpfp, "removed with Claws Mail\r\n");
 838
 839         fclose(tmpfp);
 840
 841         news_post(folder, tmp);
 842         remove(tmp);
 843
 844         g_free(tmp);
 845
 846         return 0;
 847 }
 848
 849 static gchar *news_folder_get_path(Folder *folder)
 850 {
 851         gchar *folder_path;
 852
 853         g_return_val_if_fail(folder->account != NULL, NULL);
 854
 855         folder_path = g_strconcat(get_news_cache_dir(),
 856                                   G_DIR_SEPARATOR_S,
 857                                   folder->account->nntp_server,
 858                                   NULL);
 859         return folder_path;
 860 }
 861
 862 static gchar *news_item_get_path(Folder *folder, FolderItem *item)
 863 {
 864         gchar *folder_path, *path;
 865
 866         g_return_val_if_fail(folder != NULL, NULL);
 867         g_return_val_if_fail(item != NULL, NULL);
 868         folder_path = news_folder_get_path(folder);
 869
 870         g_return_val_if_fail(folder_path != NULL, NULL);
 871         if (folder_path[0] == G_DIR_SEPARATOR) {
 872                 if (item->path)
 873                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 874                                            item->path, NULL);
 875                 else
 876                         path = g_strdup(folder_path);
 877         } else {
 878                 if (item->path)
 879                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 880                                            folder_path, G_DIR_SEPARATOR_S,
 881                                            item->path, NULL);
 882                 else
 883                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 884                                            folder_path, NULL);
 885         }
 886         g_free(folder_path);
 887
 888         return path;
 889 }
 890
 891 static gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 892 {
 893         NNTPSession *session;
 894         gint i, ok, num, first, last, nummsgs = 0;
 895         gchar *dir;
 896
 897         g_return_val_if_fail(item != NULL, -1);
 898         g_return_val_if_fail(item->folder != NULL, -1);
 899         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 900
 901         session = news_session_get(folder);
 902         g_return_val_if_fail(session != NULL, -1);
 903
 904         *old_uids_valid = TRUE;
 905
 906         news_folder_lock(NEWS_FOLDER(item->folder));
 907
 908         ok = news_select_group(session, item->path, &num, &first, &last);
 909         if (ok != NN_SUCCESS) {
 910                 log_warning(LOG_PROTOCOL, _("couldn't set group: %s\n"), item->path);
 911                 news_folder_unlock(NEWS_FOLDER(item->folder));
 912                 return -1;
 913         }
 914
 915         dir = news_folder_get_path(folder);
 916         if (num <= 0)
 917                 remove_all_numbered_files(dir);
 918         else if (last < first)
 919                 log_warning(LOG_PROTOCOL, _("invalid article range: %d - %d\n"),
 920                             first, last);
 921         else {
 922                 for (i = first; i <= last; i++) {
 923                         *msgnum_list = g_slist_prepend(*msgnum_list,
 924                                                        GINT_TO_POINTER(i));
 925                         nummsgs++;
 926                 }
 927                 debug_print("removing old messages from %d to %d in %s\n",
 928                             first, last, dir);
 929                 remove_numbered_files(dir, 1, first - 1);
 930         }
 931         g_free(dir);
 932         news_folder_unlock(NEWS_FOLDER(item->folder));
 933         return nummsgs;
 934 }
 935
 936 #define READ_TO_LISTEND(hdr) \
 937         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 938                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 939                         log_warning(LOG_PROTOCOL, _("error occurred while getting %s.\n"), hdr); \
 940                         return msginfo; \
 941                 } \
 942         }
 943
 944 static void news_set_msg_flags(FolderItem *item, MsgInfo *msginfo)
 945 {
 946         msginfo->flags.tmp_flags = 0;
 947         if (item->folder->account->mark_crosspost_read && msginfo->msgid) {
 948                 if (item->folder->newsart &&
 949                     g_hash_table_lookup(item->folder->newsart, msginfo->msgid) != NULL) {
 950                         msginfo->flags.perm_flags = MSG_COLORLABEL_TO_FLAGS(item->folder->account->crosspost_col);
 951
 952                 } else {
 953                         if (!item->folder->newsart)
 954                                 item->folder->newsart = g_hash_table_new(g_str_hash, g_str_equal);
 955                         g_hash_table_insert(item->folder->newsart,
 956                                         g_strdup(msginfo->msgid), GINT_TO_POINTER(1));
 957                         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 958                 }
 959         } else {
 960                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 961         }
 962 }
 963
 964 static MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 965 {
 966         NNTPSession *session;
 967         MsgInfo *msginfo = NULL;
 968         gchar buf[NNTPBUFSIZE];
 969         gint ok;
 970
 971         session = news_session_get(folder);
 972         g_return_val_if_fail(session != NULL, NULL);
 973         g_return_val_if_fail(item != NULL, NULL);
 974         g_return_val_if_fail(item->folder != NULL, NULL);
 975         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 976
 977         log_message(LOG_PROTOCOL, _("getting xover %d in %s...\n"),
 978                     num, item->path);
 979         ok = nntp_xover(session, num, num);
 980
 981         news_folder_lock(NEWS_FOLDER(item->folder));
 982
 983         if (ok != NN_SUCCESS) {
 984                 log_warning(LOG_PROTOCOL, _("couldn't get xover\n"));
 985                 if (ok == NN_SOCKET) {
 986                         session_destroy(SESSION(session));
 987                         REMOTE_FOLDER(item->folder)->session = NULL;
 988                 }
 989                 news_folder_unlock(NEWS_FOLDER(item->folder));
 990                 return NULL;
 991         }
 992
 993         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 994                 log_warning(LOG_PROTOCOL, _("error occurred while getting xover.\n"));
 995                 news_folder_unlock(NEWS_FOLDER(item->folder));
 996                 return NULL;
 997         }
 998
 999         msginfo = news_parse_xover(buf);
1000         if (!msginfo) {
1001                 log_warning(LOG_PROTOCOL, _("invalid xover line: %s\n"), buf);
1002         }
1003
1004         READ_TO_LISTEND("xover");
1005
1006         if(!msginfo) {
1007                 news_folder_unlock(NEWS_FOLDER(item->folder));
1008                 return NULL;
1009         }
1010
1011         msginfo->folder = item;
1012
1013         news_set_msg_flags(item, msginfo);
1014         msginfo->flags.tmp_flags |= MSG_NEWS;
1015         msginfo->newsgroups = g_strdup(item->path);
1016
1017         ok = nntp_xhdr(session, "to", num, num);
1018         if (ok != NN_SUCCESS) {
1019                 log_warning(LOG_PROTOCOL, _("couldn't get xhdr\n"));
1020                 if (ok == NN_SOCKET) {
1021                         session_destroy(SESSION(session));
1022                         REMOTE_FOLDER(item->folder)->session = NULL;
1023                 }
1024                 news_folder_unlock(NEWS_FOLDER(item->folder));
1025                 return msginfo;
1026         }
1027
1028         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1029                 log_warning(LOG_PROTOCOL, _("error occurred while getting xhdr.\n"));
1030                 news_folder_unlock(NEWS_FOLDER(item->folder));
1031                 return msginfo;
1032         }
1033
1034         msginfo->to = news_parse_xhdr(buf, msginfo);
1035
1036         READ_TO_LISTEND("xhdr (to)");
1037
1038         ok = nntp_xhdr(session, "cc", num, num);
1039         if (ok != NN_SUCCESS) {
1040                 log_warning(LOG_PROTOCOL, _("couldn't get xhdr\n"));
1041                 if (ok == NN_SOCKET) {
1042                         session_destroy(SESSION(session));
1043                         REMOTE_FOLDER(item->folder)->session = NULL;
1044                 }
1045                 news_folder_unlock(NEWS_FOLDER(item->folder));
1046                 return msginfo;
1047         }
1048
1049         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1050                 log_warning(LOG_PROTOCOL, _("error occurred while getting xhdr.\n"));
1051                 news_folder_unlock(NEWS_FOLDER(item->folder));
1052                 return msginfo;
1053         }
1054
1055         msginfo->cc = news_parse_xhdr(buf, msginfo);
1056
1057         READ_TO_LISTEND("xhdr (cc)");
1058         news_folder_unlock(NEWS_FOLDER(item->folder));
1059         return msginfo;
1060 }
1061
1062 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
1063 {
1064         gchar buf[NNTPBUFSIZE];
1065         GSList *newlist = NULL;
1066         GSList *llast = NULL;
1067         MsgInfo *msginfo;
1068         guint count = 0, lines = (end - begin) + 2;
1069         gint ok;
1070
1071         g_return_val_if_fail(session != NULL, NULL);
1072         g_return_val_if_fail(item != NULL, NULL);
1073
1074         log_message(LOG_PROTOCOL, _("getting xover %d - %d in %s...\n"),
1075                     begin, end, item->path);
1076         ok = nntp_xover(session, begin, end);
1077         if (ok != NN_SUCCESS) {
1078                 log_warning(LOG_PROTOCOL, _("couldn't get xover\n"));
1079                 if (ok == NN_SOCKET) {
1080                         session_destroy(SESSION(session));
1081                         REMOTE_FOLDER(item->folder)->session = NULL;
1082                 }
1083                 return NULL;
1084         }
1085
1086         news_folder_lock(NEWS_FOLDER(item->folder));
1087
1088         for (;;) {
1089                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1090                         log_warning(LOG_PROTOCOL, _("error occurred while getting xover.\n"));
1091                         news_folder_unlock(NEWS_FOLDER(item->folder));
1092                         return newlist;
1093                 }
1094                 count++;
1095                 progressindicator_set_percentage
1096                         (PROGRESS_TYPE_NETWORK,
1097                          session->fetch_base_percentage +
1098                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1099
1100                 if (buf[0] == '.' && buf[1] == '\r') break;
1101
1102                 msginfo = news_parse_xover(buf);
1103                 if (!msginfo) {
1104                         log_warning(LOG_PROTOCOL, _("invalid xover line: %s\n"), buf);
1105                         continue;
1106                 }
1107
1108                 msginfo->folder = item;
1109                 news_set_msg_flags(item, msginfo);
1110                 msginfo->flags.tmp_flags |= MSG_NEWS;
1111                 msginfo->newsgroups = g_strdup(item->path);
1112
1113                 if (!newlist)
1114                         llast = newlist = g_slist_append(newlist, msginfo);
1115                 else {
1116                         llast = g_slist_append(llast, msginfo);
1117                         llast = llast->next;
1118                 }
1119         }
1120
1121         ok = nntp_xhdr(session, "to", begin, end);
1122         if (ok != NN_SUCCESS) {
1123                 log_warning(LOG_PROTOCOL, _("couldn't get xhdr\n"));
1124                 if (ok == NN_SOCKET) {
1125                         session_destroy(SESSION(session));
1126                         REMOTE_FOLDER(item->folder)->session = NULL;
1127                 }
1128                 news_folder_unlock(NEWS_FOLDER(item->folder));
1129                 return newlist;
1130         }
1131
1132         llast = newlist;
1133
1134         for (;;) {
1135                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1136                         log_warning(LOG_PROTOCOL, _("error occurred while getting xhdr.\n"));
1137                         news_folder_unlock(NEWS_FOLDER(item->folder));
1138                         return newlist;
1139                 }
1140
1141                 if (buf[0] == '.' && buf[1] == '\r') break;
1142                 if (!llast) {
1143                         g_warning("llast == NULL\n");
1144                         continue;
1145                 }
1146
1147                 msginfo = (MsgInfo *)llast->data;
1148                 msginfo->to = news_parse_xhdr(buf, msginfo);
1149
1150                 llast = llast->next;
1151         }
1152
1153         ok = nntp_xhdr(session, "cc", begin, end);
1154         if (ok != NN_SUCCESS) {
1155                 log_warning(LOG_PROTOCOL, _("couldn't get xhdr\n"));
1156                 if (ok == NN_SOCKET) {
1157                         session_destroy(SESSION(session));
1158                         REMOTE_FOLDER(item->folder)->session = NULL;
1159                 }
1160                 news_folder_unlock(NEWS_FOLDER(item->folder));
1161                 return newlist;
1162         }
1163
1164         llast = newlist;
1165
1166         for (;;) {
1167                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1168                         log_warning(LOG_PROTOCOL, _("error occurred while getting xhdr.\n"));
1169                         news_folder_unlock(NEWS_FOLDER(item->folder));
1170                         return newlist;
1171                 }
1172
1173                 if (buf[0] == '.' && buf[1] == '\r') break;
1174                 if (!llast) {
1175                         g_warning("llast == NULL\n");
1176                         continue;
1177                 }
1178
1179                 msginfo = (MsgInfo *)llast->data;
1180                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1181
1182                 llast = llast->next;
1183         }
1184         news_folder_unlock(NEWS_FOLDER(item->folder));
1185
1186         session_set_access_time(SESSION(session));
1187
1188         return newlist;
1189 }
1190
1191 static GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1192 {
1193         NNTPSession *session;
1194         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1195         guint first, last, next;
1196         guint tofetch, fetched;
1197
1198         g_return_val_if_fail(folder != NULL, NULL);
1199         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1200         g_return_val_if_fail(msgnum_list != NULL, NULL);
1201         g_return_val_if_fail(item != NULL, NULL);
1202
1203         session = news_session_get(folder);
1204         g_return_val_if_fail(session != NULL, NULL);
1205
1206         tmp_msgnum_list = g_slist_copy(msgnum_list);
1207         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1208
1209         progressindicator_start(PROGRESS_TYPE_NETWORK);
1210         tofetch = g_slist_length(tmp_msgnum_list);
1211         fetched = 0;
1212
1213         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1214         last = first;
1215
1216         news_folder_lock(NEWS_FOLDER(item->folder));
1217
1218         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1219                 next = GPOINTER_TO_INT(elem->data);
1220                 if(next != (last + 1)) {
1221                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1222                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1223                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1224                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1225                         fetched = last - first + 1;
1226                         first = next;
1227                 }
1228                 last = next;
1229         }
1230
1231         news_folder_unlock(NEWS_FOLDER(item->folder));
1232
1233         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1234         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1235         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1236         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1237
1238         g_slist_free(tmp_msgnum_list);
1239
1240         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1241
1242         return msginfo_list;
1243 }
1244
1245 static gboolean news_scan_required(Folder *folder, FolderItem *item)
1246 {
1247         return TRUE;
1248 }
1249
1250 void news_synchronise(FolderItem *item, gint days)
1251 {
1252         news_gtk_synchronise(item, days);
1253 }
1254
1255 static gint news_remove_folder(Folder *folder, FolderItem *item)
1256 {
1257         gchar *path;
1258
1259         g_return_val_if_fail(folder != NULL, -1);
1260         g_return_val_if_fail(item != NULL, -1);
1261         g_return_val_if_fail(item->path != NULL, -1);
1262
1263         path = folder_item_get_path(item);
1264         if (remove_dir_recursive(path) < 0) {
1265                 g_warning("can't remove directory `%s'\n", path);
1266                 g_free(path);
1267                 return -1;
1268         }
1269
1270         g_free(path);
1271         folder_item_remove(item);
1272         return 0;
1273 }